Valve



T. F. GRAY- sept. v13, 1927.

VALVE Filed April 14, 1924 4 Sheets-Sheet 2 Fig.6

Figb

Sept. 13, 1927.

v T. F. GRAY VALVE 4 sheets-sheet 3 Filed April 14, 1924 l lill..

Illrl W////////////////////,'.////,D l' l l Sept. 13, .11927. A1,642,242

T. F. GRAY vALvE Filed April 14, 1924 4 sheets-sneet'4 i r .i i d Patented Sept. 13, 1927.

TOI FREDERICK GRAY, OF MANCHESTER, ENGLAND.

VALVE.

Application illed April 14, 1924. Serial No. 706,808.

This invention relates to valves, such as .stop or gate valves, particularly for use with pipes or mains conveying superheated high.

ressure steam, and comprises an improved construction 'of the body or casing parts of such valves whereby the said parts are produced of light weight combined with great strength ensuring the capacity to safely withstand the stresses imposed thereon in service.

Referring to the four accompanying sheets of explanatory drawings I Fi re 1 is an elevation, half in section, and igure 2 is a plan, half in section, of a valve casing constructed in accordance with this invention, such casing being suitable for a junction type stop valve. Figures 3 to 6 'show the separate pieces or members from which. the said casing is constructed, Figure 3 being an end view of the shell, Fi ure 4 a sectional lan of the shell branch, igure 5 a Section5 elevation of the shell sleeve and seating ring, and Figure 6 a sectional elevation of the shell lid or cover.

Fi re 7 is an elevation half in section, and igure 8 a plan, half m'section, of ani' other form of valve casing .constructed in accordance with 'this invention and suitable for a stop valve of the gate or full way type. Figures 9 to 12 show the separate pieces from which the said casing is constructed, Figure 9 being an end view of thetshell, Figure 10 a sectional `elevation of one ofthe shell branches, Fi re 11 a sectional elevation of one of the\ ranch sleeves and seating ring and Figure 1 a sectional elevation of f the shell lid or cove The aforesaid sepa te pieces or members of the valve casngs are made from steel discs or billets which are brought tothe required shape by stamping or forging o rations. Thus, with the casing illustrate at Figures 1 and 2, the shell piece a, which is shownv se arately at Figure 3, is made to a tubular orm open at each end, having atlange. Ab at the extremit of the portion which is of a rather smal er diameter than that of the portion having a lateral aperture ctherein to receive one end of the branch piece or member d. The opposite end of the said branch d which is shown separately at Figure 4) has a flange e formed integrally therewith. Into the reduced diameter portion of the shell piece a there is inserted a' y sleeve f (shown separately at Fi re 5) hav' ing a I lange g formed inte rali71 with one end of 1t, whereby it is detacably secured to the shell a b screw studs as h. When thus secured the ace of the flange g is flush with the face of the flan e b of the shell u. To the opposite end o said sleeve f there is welded the valve seating ring 'i which is preferably' made of hardened steel.-

The branch d aforesaid is welded to the shell a; the latter is thus provided with' inlet and outlet apertures y, It:- for the flow of fluid. The shell is closed by the lid l of which' a separate view is given at Figure 6. On the underside of the said lid l there is formed an annular groove or socket m to receive, as shown at Figure 1 and also by dotted lines at Figure 6, the-top of the shell a. When the said arts are thus inserted the one within the ot er they are secured by welding and in the rocess of welding the metal is rounded at t e juncture between the shell and the flange l as shown at Figure 1.

With the casin illustrated by Figures 7 to 12, the shell a as a lateral aperture as c in two opposite sides and in each of such apertures there is inserted and welded a branch piece as d having a flange e at one end. In each branch there is placed a sleeve having a flan g formed integrally therewith for the etachable connection of the sleeve to the shell a by the screw studs h.v Each'sleeve has a valve hardened steel seating ring ,i welded thereto. The shell is formed with a closed lower end whilst itsupper open end is inserted within an annular groove m in the lid l to whchvit is welded.

I claim :l 1. A valve `casing comprisin a weldless cylindrical shell provided wit a lateral socket, a tubular branch piece welded in said socket having a concave .extremity corre -with and Welded to the interior and exterior peripheral surfaces of the shell top.

2. A valve casing comprising a weldless' cylindrical shell provided with al lateral socket, ay tubular branch piece welded in said socket havin a concave extremity cor- 0 responding to an Hush with the cylindrical interiorv of the shell, a sleeve detachably secured within said. branch piece, a lid, and an annular socket in said lid having walls contacting with and Welded to the interior and the exterior peripheral surfaces of the shell top.

l In testimony whereof I have signed my name to this Specification.

rroM FREDEriroK GRAY. 

